NewLink Genetics continues its clinical trials of indoximod in combination therapies for adult patients with newly diagnosed AML, pediatric patients with recurrent brain tumors, and pediatric patients with newly diagnosed DIPG. These targeted indications are those with unmet need where indoximod has produced encouraging early data and where standard-of-care therapy has not changed significantly for decades.

A Phase 2 study evaluating NLG207, a nanoparticle formulation of the topoisomerase 1 inhibitor camptothecin, in combination with paclitaxel for patients with recurrent ovarian cancer is complete, and data analysis is underway. NLG207 is an asset acquired from Cerulean Pharma Inc. in 2017. This trial is being conducted in conjunction with the Gynecological Oncology Group.

Board Changes

Paolo Pucci has resigned his position as a Director on NewLink Genetics’ Board effective October 31, 2018 due to the increasing responsibilities associated with his current position as CEO of ArQule, Inc. and current guidelines of proxy advisors regarding the number of directorships to be held by a CEO. With Mr. Pucci’s departure, NewLink’s Board will consist of seven directors.

Financial Results for the Three-Month Period Ended September 30, 2018

Cash Position: NewLink Genetics ended the quarter on September 30, 2018, with cash and cash equivalents totaling $122.1 million compared to $158.7 million for the year ending December 31, 2017.

R&D Expenses: Research and development expenses for the third quarter of 2018 were $7.6 million, a decrease of $10.9 million from $18.5 million for the same period in 2017. The decrease was due to reductions of $7.3 million in contract research and manufacturing spend, $2.5 million in clinical trial expense, $570,000 in personnel-related and stock compensation expense, $560,000 in supplies and licensing, and $100,000 in restructuring costs. These reductions were offset by an increase of $70,000 in legal and consulting expense.

G&A Expenses: General and administrative expenses for the third quarter of 2018 were $7.6 million, a decrease of $320,000 from $7.9 million for the same period in 2017. The decrease was due to reductions of $300,000 in restructuring costs, $240,000 in legal and consulting expenses, and $10,000 in personnel-related and stock compensation expense. These reductions were offset by an increase of $230,000 in supplies and other expense.

Net Loss: NewLink Genetics reported a net loss of $7.4 million or ($0.20) per diluted share for the third quarter of 2018 compared to a net loss of $20.6 million or ($0.69) per diluted share for the third quarter of 2017.

The Company has scheduled a conference call and webcast for 4:30 p.m. ET today to discuss the results and to give an update on clinical and business development activities. NewLink Genetics' senior management team will host the call, which will be open to all listeners. There will also be a question and answer session following the prepared remarks.

Access to the live conference call is available by dialing (855) 235-8286 (U.S.) or (267) 753-2161 (international) five minutes prior to the start of the call. The conference call will be webcast live and a link to the webcast can be accessed through the NewLink Genetics website at www.NewLinkGenetics.com in the "Investors & Media" section under "Events and Presentations" or by clicking here. To ensure a timely connection, it is recommended that users register at least 10 minutes prior to the scheduled webcast. A replay of the call will be available approximately two hours after the completion of the call and can be accessed by dialing (855) 859-2056 (U.S.) or (404) 537-3406 (international) and using the passcode 1753698. The replay will be available for two weeks from the date of the call.

About Indoximod

Indoximod is an investigational, orally available small molecule targeting the IDO pathway. The IDO pathway is a key immuno-oncology target, suppressing immune response and allowing for immune escape by degrading tryptophan with the resultant production of kynurenine. Indoximod reverses the immunosuppressive effects of low tryptophan and high kynurenine through mechanisms that include modulation of the AhR-driven transcription of genes that control immune function. This results in increased proliferation of effector T cells, increased differentiation into helper T cells rather than regulatory T cells, and downregulation of IDO expression in dendritic cells. Indoximod is being evaluated in combination with treatment regimens including chemotherapy, radiation, checkpoint blockade and cancer vaccines across multiple indications including recurrent pediatric brain tumors, DIPG, and AML.

About NewLink Genetics Corporation

NewLink Genetics is a clinical stage biopharmaceutical company focusing on developing novel immuno-oncology product candidates to improve the lives of patients with cancer. NewLink Genetics' IDO pathway inhibitors are designed to harness multiple components of the immune system to combat cancer. For more information, please visit www.NewLinkGenetics.com and follow us on Twitter @NLNKGenetics.

Cautionary Note Regarding Forward-Looking Statements

This press release contains forward-looking statements of NewLink that involve substantial risks and uncertainties. All statements contained in this press release are forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. The words "guidance," "upcoming," "will," "plan," “intend,” "anticipate," "approximate," "expect," or the negative of these terms or other similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. These forward-looking statements include, among others, statements about NewLink Genetics' financial guidance for 2018; results of its clinical trials for product candidates; its timing of release of data from ongoing clinical studies; its plans related to moving additional indications into clinical development; NewLink Genetics' future financial performance, results of operations, cash position and sufficiency of capital resources to fund its operating requirements; the effects of its organizational realignment; and any other statements other than statements of historical fact. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements that NewLink makes due to a number of important factors, including those risks discussed in "Risk Factors" and elsewhere in NewLink Genetics' Annual Report on Form 10-K for the year ended December 31, 2017 and other reports filed with the U.S. Securities and Exchange Commission (SEC). The forward-looking statements in this press release represent NewLink's views as of the date of this press release. NewLink anticipates that subsequent events and developments will cause its views to change. However, while it may elect to update these forward-looking statements at some point in the future, it specifically disclaims any obligation to do so. You should, therefore, not rely on these forward-looking statements as representing NewLink Genetics' views as of any date subsequent to the date of this press release.

Common stock, $0.01 par value: Authorized shares - 75,000,000 at September 30, 2018 and December 31, 2017; issued 37,305,626 and 37,168,122 at September 30, 2018 and December 31, 2017, respectively, and outstanding 37,216,892 and 37,109,556 at September 30, 2018 and December 31, 2017, respectively

373

372

Additional paid-in capital

399,018

389,786

Treasury stock, at cost: 88,734 and 58,566 shares at September 30, 2018 and December 31, 2017, respectively